Beginner Exercise 195 / Solution

Solution - Follow up 1  

White almost fills the black eye with a killing shape, the farmer's hat.

Solution - Follow up 2  

If Black throws in at , White still almost fills the black eye with a killing shape, this time the crossed five.

Failure  

might look like a tesuji at the first glance, but after Black is alive.

Failure - Follow up 1  

This looks similar to the success diagrams, but because of the liberty at a Black's eye isn't almost filled anymore. To almost fill White would need to play twice, but thus can't achieve a killing shape anymore. The result is seki.

Failure - Follow up 2  

If White tries to make a ko with , this fails as well as Black has enough liberties to crush the ko with .

Another failure  

fails, after Black answer with the best White can achieve is seki with .